Metallic door



50 view of one of the upper corners of the door.

Patented S ept. 22, 1925.

UNITED STATES 1,554,714 PATENT OFFICE.

nnwann J. zaixm, or La roars, INDIANA, assronon 'ro J. c. murmur-n 00mPANY, OF LA FORTE, INDIANA, A CORPORATION OF'ILLINOIS.

METALLIC noon.

' Application fled October 5, 1882. Serial Io. 592,485.

T 0 all whomjt may concern:

Be it known that I, EDWARD J. ZAHNER, a

citizen of the United States, residing at La Porte, in the county of LaPorte and State of Indiana, have invented certain new and usefulImprovements in Metallic Doors, of which the following is aspecification.

The invention relates to metallic doors, and has for its object toprovide a .device of this character, wherein the op )osite .sides of thedoor are formed from single sheets of metal and provided with inwardlyextending flanges adapted to abut each other and form the vertical edgesof the door. The flanges are secured together by strips, referably spotwelded to the inner sides t ereof. Also to provide stiffening means forthe sidesof the door, said stiffening means comprising interengagedchannel members secured to the inner sides of the sides of the door. Theinterengaged channel members \'.have a sliding engagement therebyallowing the assembling of the door after the channel members aresecuredto the sides thereof.

A further object is to dispose between the sheets forming the o positesides of the door, at the upper an lower ends thereof, channel membershaving their flangesextending outwardly and terminating inwardlyextending flanges, which inwardly extending flanges engage invertedchannel members having spring flanges, whereby the last named channelmembers may be forced into the first named channels:

With the above and other objects in view the invention resides in thecombination and arrangement of parts as hereinafter set forth, shown inthe drawing, described and claimed, it being understood that changes inthe recise embodiment of the invention may e made within the scope of.what is claimed without departing from the spirit of the invention.

In the drawings:

Figure 1 is a side, elevation of the'door.

Figure 2 is a horizontal. sectional view through the door taken -on line22 of Figure 1.

Figure 3 is a top plan view ofthe door.

Figure 4 is an enlarged. detail perspective Figure 5 is an enlargeddetail perspective view, partly in section of a portion of the lower endof the door, showing the inverted channel-removed.

Figure 6 is a detail sectional view through a portlon of the door andthrough one of;

the. reinforcing members- Figure 7 is a detail perspective view of aportion of one of the inverted channels.

Referring to the drawings, the numeral 1 designates the opposite sidesof the door, which sides are formed. from single sheets of metalprovided with inwardly extending vertically disposed flanges 2, whichsubstantially abut each other at 3. Secured to the inner sides of theflanges 2 are vertically disposed strips 4, said strips being preferablysecured by means of spot welding at 5. After the strips 4 have beensecured in place, and the door as a whole finished, the various seamssuch as at 3 are cemented and the door finished by painting, enamelingor in any other suitable manner, therefore the seams are invisible.

Disposed between the sides 1 of the door and secured to said sides byspot welding at 6 are vertically disposed angle bars 7,which angle barshave their flanges 8 bent upon themselves at 9 and then outwardlyupwardly and inwardly, thereby forming vertically disposed channels,which channels are rovided with flanges 11 parallel with the flanges 8.The channels and flanges 11 are interengaged as shown in Figure 6 andwhen the sides 1 are assembled a sliding engagement of the channels isobtained, and

the sides moved into registration, after which the strips 4 are spotwelded to the flanges 2. Secured within the upper and lower ends of thedoor between the sides 1', preferably by spot welding at' 12 are U-shaped channels 13, the flanges 14 of which extend outwardly andterminate in inwardl extending flanges 15, preferably flush wit theupper and lower ends of the sides 1 of the door. After the U-shapedchannels 13 have been placed in position the inverted channels 16 areforced into the u per and lower ends of the doors with their anges 17extending inwardly between the flanges 15. Flanges 17 are angularlyshaped in cross section and spring inwardly as the channels 16 areforced'inwardly, and after the channels havereached their limit ofinward movement, theflanges 17 spring outwardly under the flanges 15 ofthe channels 13 thereby maintaining the inverted ehannels 16 ininterlocked position.

It will be seen that the door may be easily and guickly assembled insuch a manner that all the s t welding points may be easily 7 reached,eit or before or during the assembling operation and that thedoor isrigidly braced centrally b the channel members 10 and the angle mem ers7. The channel members are sufiiciently large to allow them to easilytelescope and to ex slightly in relation to each other incident to thevariation of measurements during manufacture, which inaccuracies arealso ta en care of by the enlar ed channels 10. I I

'Fhe invention having been set forth what is claimed as new and usefulis 1. The combination with a metallic door, said door comprisingoppositely disposed sides, of means for securing sides of said doortogether, said means comprising channel members disposed between thesides, the

flanges of said channel members extending outwardly to points adjacent.the ends of the sides, inwardly extending flanges carried by the channelflanges, and mverted channel members disposed within the first mentionedchannel members and having their transverse portions substantially flushwith the ends of the sides.

2. The combination with opposite sides of a metallic door, of means forsecuring said sides together, said means comprising a channel memberdisposed between the sides and having its flanges extending outwardly,inwardly extending flanges carried by the flanges of the channel member,a channel member disposed within the first mentioned channel member inreverse position, the sec ondmentioned channel member being providedwith spring flanges adapted to underlie the inwardly extending flangesof. the first mentioned channel member.

3. The combination with oppositely disposed sides of a metallic door, ofmeans for securing said sides together, said means comprising a channelmember secured to the sides, the flanges of the channel memberterminating in inwardly extending flanges, a reversed channel memberdisposed within the first mentioned channel member, the flanges of thereversed channel member being an larly shaped and adapted to spring toposition beneath the inwardly extending flanges of the channel member.

4. A metallic door comprising oppositely disposed sides, the verticaledges of said sides being provided with inwardly extendingflanges,'strips secured to the inner sides of said flanges, reinforcingmembers secured to the inner sides of the opposite sides of the door andprovided with channels to interengage each other, interengaged reversedpositioned channels secured to the opposite sides of the door andforming closures for the upper and lower ends thereof.

5. The combination'with a metallic door comprising op ositely disposedsides of means for rein orcing said sides and door, said meanscomprising opposed flanges extending inwardly of the sides of the door,said flanges having offset channel portions arranged in relativelyreversed relation and terminating in flangesdisposed parallel with thefirst named flanges, said terminal flanges being substantially of awidth correspond ing with the inner dimension of the channels andadapted to seat within said channels.

6. The combination with a metallic door comprisingspaced sides, of meansfor securing said sides 'to ether, said means comprising inverted U-aped channels interengaging each other, the flanges of one of saidchannels being provided with inwardly extending flanges, the flanges ofthe other channel being provided with flanges angularly shaped in crosssection.

In testimony whereof I afiix my si ature.

EDWARD J. ZAH ER.

